@npub1jw6x...hk66 Hello, I was wondering, do you know of or have any resources on ondol-type floor heating systems?

I know it's Korean, but there must be similar things in Japan? You can guess that I'm thinking this could be a temporary solution (if they can make a little version with rubble and raw earth) for - those who live in tents to stay out of the water - to avoid breathing toxic fumes (from plastic) - to make the most of the heat from the kitchen fire to heat at night and cold day